Seagate Barracuda IV

I have a major problem with me 60GB Barracuda IV. I started my computer yesturday and the hard disk spun up and then went clunk, clunk, clunk...clunk, clunk, clunk. And now my BIOS won't even detect it. This can't be good. Anyone had this problem, or know how to fix it, or is this a return to seagate problem?